Move your website from Joomla to another CMS

You need to move your site from Joomla CMS to another CMS. All URLs must be saved and the same template (all template elements) must remain as it was. The new engine should be more SEO-optimized and less resource-intensive.

Proposals to improve the current engine are not interesting.
WordPress, Drupal, uCoz, etc. - not interested.

I am looking forward to your CMS and cost.